§ 666 [Presumption of Lawful Jurisdiction by Courts]

When a court or judge takes action, the law automatically assumes they had the legal right to do that action. You don't need to prove they had authority. The law starts from the position that they did.

This assumption only matters in specific situations called "collateral attacks." A collateral attack is when someone tries to challenge a court's action in a separate, later case rather than by directly appealing the original decision. In those situations, the person making the challenge has to overcome this built-in assumption that the court acted within its proper authority.